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'UNITED STATES ATENT OFFICE.

S. F. FORMAN, OF NEYV YORK, N. Y., ASSIGNOR TO HENRY C. DREV, OF SAME PLACE.

DEVICE FOR SECURING CUTTERS IN ROTARY PLANING-MACHINES.

Specification of Letters Patent No. 29,762, dated June 29', 1858.

To all whom it may concern:

Be it known that I, SANDS F. FORMAN, of the city and State of New York, have invented, made, and applied to use a new and useful Improvement in Attaching Cutters for Beading or Rabbeting to Cylinders of Planing-Machines; and I do hereby declare that the following is a full, clear, and exact description of the construction and opera tion of the same, reference being had to the annexed drawings, making part of this specification, wherein- Figure l, is an end view of a planing machine cylinder with my cutter attached, and Fig. 2, is a view of the side of said cylinder and cutter.

Similar marks of reference denote the same parts.

Cutters for planing beads and rabbets on boards have heretofore been attached by bolts to the inside of the cutter knife in those planing cylinders in which the cutter head projects beyond and receives the knife or cutter within it; in this case it is found practically the molding or rabbet cutter is not reliable or eicient because it can be turned aside by striking a knot, and the shavings become wedged behind the said cut-ter.

My said invention-does not consist in attaching beading or rabbeting cutters to cylinders of planing machines in itself, but my invention relates to a manner of securing the beading' or rabbeting cutter in a slot in the cutter head by the combined action of pressure from the cutter or knife itself and a screw running parallel with the axis of said cylinder, which securely retain the cutter in place, and prevent shavings wedging in between the straight cutter and the molding cutter as hereafter set forth.

In the drawing the cylinder only of a planing machine is shown, the other parts being of the usual construction.

cz, a, are the journals and b is the stock to which the straight cutters or knives c, c, c, are attached by the screws l, l, as usual.

rZ, is a cutter of t-he size and shape required for forming a bead or rabbet of the desired shape. This cutter cl, is inserted into a mortise planed across the stock Z) immediately below the cutter or knife c, and the cutter CZ, is of such a size that when inserted while the screws l, 1, are slackened the said cutter c, will bind onto and lirmly clamp the cutter d, when the screws 1, l, are screwed in tightly; and to prevent any sidewise motion the screw 2,V is inserted and takes against the said cutter cl, and clamps it in the direction of the axis of the cylinder: The cut-ter Z is thus securely held in place, there is no chance for lateral motion and no screws or bolts around which the chips will become clogged, are made use of. The cross slot receiving this cutter d may be at any desired position in the length of the cylinder, and by regulating the ordinary fence of the machine the said beading or rabbeting cutter can be made to work on any desired portion of the board.

I do not claim a beading or rabbeting cutter attached to the cylinder of a planing machine, in itself; but

That I claim as my invention and desire to secure by Letters Patent, is-

Securing a beading or rabbeting cutter into a slot in the stock of a planing machine cylinder, by pressure from the straight Cutter or knife and from a screw running nearly parallel with the axis of 'the rotary cutter. ubstantially as and for the purposes speci- In witness whereof I have hereunto set my signature this fourteenth day of June SANDS F. FORMAN. Witnesses:

LEMUEL W. SERRELL, THOMAS Gr. HAROLD. 

